P.S.: I just re-read your original post and saw that you had eliminated mini-BNC... but the side difference is not nearly as much as between BNC and HDBNC.

P.P.S: This is a real head-scratcher. The spec sheets for this product call for an ordinary BNC connector for the ASI output. Could someone have modified your box for some reason?

Tomorrow I will post a picture. The specs do say an ordinary BNC, but look carefully at the encoder pictures. Top center is the ASI output card, then look at the HDSDI input card, bottom left. The amphenol connectors are interesting, I may order one just for the heck of it from my cable/connector guy.